Overview
- The EPA, working with the Department of Energy, issued the emergency waiver on Thursday to permit the sale of higher‑RVP E10 beginning Sept. 1 and initially running through Sept. 15.
- The agency said it can temporarily override stricter state summer‑blend rules for up to 20 days and will monitor supplies with the option to extend the flexibility if shortages persist.
- Officials estimate the early switch could add hundreds of thousands of barrels per day to U.S. gasoline stocks and help push down retail prices, though local station inventories may delay visible savings.
- Public‑health and environmental groups warn higher Reid Vapor Pressure and increased ethanol blends raise evaporative emissions that can worsen ground‑level ozone and harm respiratory health, and some older vehicles may face compatibility or fuel‑economy issues.
- Practical limits on benefits include state fuel programs, California’s isolated market and distribution constraints, and the waiver is one of several short‑term steps the administration has taken this year to ease supply pressure.